working TCC (Test response funciton)

app/services/loft_service.py

@@ -45,12 +45,7 @@ class LoftService(Base):
     # real solver will return N forms and process a cut score, this is for mock purposes
     return Solution(
       response_id=random.randint(100,5000),
-      forms=[
-        Form(
-          items=[item.id for item in random.sample(self.solver_run.items, self.solver_run.total_form_items)],
-          cut_score=120
-        ) for x in range(form_count)
-      ]
+      forms=[self.generate_forms(random.sample(self.solver_run.items, self.solver_run.total_form_items)) for x in range(form_count)]
     )
 
   def stream_to_s3_bucket(self):
@@ -60,3 +55,9 @@ class LoftService(Base):
 
     # upload generated file to s3 and return result
     return aws_helper.file_stream_upload(solution_file, f'{service_helper.key_to_uuid(self.key)}.csv', os.environ['MEASURE_PROCESSED_BUCKET'])
+
+  def generate_forms(self, items):
+    return Form(
+      items=items,
+      cut_score=TestResponseFunction(self.solver_run.irt_model).calculate(items, theta=self.solver_run.theta_cut_score)
+    )